Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,658,943	$ 2,283,598	$ 5,037,352	$ 4,325,044
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,610,062	2,224,560	4,919,289	4,188,271
Home Building Segment | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,208,312	1,048,416	2,350,020	1,984,556
Home Building Segment | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	237,394	193,245	412,945	355,438
Home Building Segment | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	521,038	478,179	982,442	903,132
Home Building Segment | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	643,318	504,720	1,173,882	945,145
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 48,881	$ 59,038	$ 118,063	$ 136,773